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Finding the Fourth Proportional to 103,444.90, 155,167.35 and 77,200.90

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Solution

The fourth proportional to 103,444.90, 155,167.35 and 77,200.90 is: 115,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,444.90 : 155,167.35 = 77,200.90 : x
  2. Step 2: Convert to fraction form
    103,444.90/155,167.35 = 77,200.90/x
  3. Step 3: Cross multiply
    103,444.90x = 155,167.35 × 77,200.90
  4. Step 4: Simplify right side
    103,444.90x = 11,979,059,070.62
  5. Step 5: Solve for x
    x = 11,979,059,070.62/103,444.90
  6. Step 6: Final answer
    x = 115,801.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.